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Android webview中JavaScript无法重新加载？

javascriptphpandroidwebview
6
我已经制作了一个简单的Webview应用程序，该应用程序拉取使用PHP和JavaScript的HTML页面：http://s-ka-paidbeats.com/app_tree/randomword/5.html 问题是JavaScript在我的移动设备上没有刷新，我无法找出原因！
当我在桌面网页浏览器上测试页面时，有时可以正常工作，但页面从未刷新，单词保持不变。在我的Android手机上，单词根本没有更新或刷新，我无法找出原因。
以下是用户查看的实际页面（5.html文件）：
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
  <head>
    <script type="text/JavaScript">
      function timedRefresh(timeoutPeriod) {
        setTimeout("location.reload(true);",timeoutPeriod);
      }
      window.onload = timedRefresh(7000);
    </script>
    <title>Freestyle Word Generator - 5 Seconds</title>
    <style type="text/css">
      body, td, p, input {
        color : #000000;
        font-family: Impact, Haettenschweiler, 'Franklin Gothic Bold', Charcoal, 'Helvetica Inserat', 'Bitstream Vera Sans Bold', 'Arial Black', 'sans serif';
        font-size : 12px;
      }
      .button {
        background-color: #f44336;
        border: none;
        color: white;
        padding: 15px 32px;
        text-align: center;
        text-decoration: none;
        display: inline-block;
        font-size: 16px;
      } /* Red */ 
    </style>
    <link rel="stylesheet" href="app1.css">
  </head>
  <body style="background-color:#000000;text-align:center;color:#fff">
    <div class="w3-container w3-orange">
      <h1 style="text-align: center;margin:0px;margin-top:15px;font-family: Impact, Haettenschweiler, 'Franklin Gothic Bold', Charcoal, 'Helvetica Inserat', 'Bitstream Vera Sans Bold', 'Arial Black', 'sans serif';">Freestyle Word Generator</h1>
      <p style="text-align:center;margin:0px;margin-bottom:15px;font-family: Impact, Haettenschweiler, 'Franklin Gothic Bold', Charcoal, 'Helvetica Inserat', 'Bitstream Vera Sans Bold', 'Arial Black', 'sans serif';font-size : 16px;">Sharpen Your Skills!</p>
    </div>
    <p style="color:#ff9800;font-size:30px;margin-bottom:0px;">YOUR WORD IS:</p>
    <p style="color:#fff;font-size : 30px;margin-top:5px;"><script type="text/javascript" src="randomword.php?type=1"></script></p>
    <script>
      function startTimer(duration, display) {
      var timer = duration, minutes, seconds;
      setInterval(function () {
          minutes = parseInt(timer / 60, 10)
          seconds = parseInt(timer % 60, 10);

          minutes = minutes < 10 ? "0" + minutes : minutes;
          seconds = seconds < 10 ? "0" + seconds : seconds;

          display.textContent = minutes + ":" + seconds;

          if (--timer < 0) {
              timer = duration;
          }
      }, 1000);
      }
      window.onload = function () {
      var fiveMinutes = 5 * 1,
          display = document.querySelector('#time');
      startTimer(fiveMinutes, display);
      };
    </script>
    <div style="color:#555;">New Word In <span id="time">00:05</span> Seconds!</div>
    <br><br>
    <input type="button" style="background-color: #ff9800;border: none;color: black;padding: 15px 32px;text-align: center;text-decoration: none;display: inline-block;font-size: 20px;" onclick="location.href='http://s-ka-paidbeats.com/app_tree/randomword/index.php';" value="STOP" />
  </body>
</html>

这是我的Android课程数据：

package com.randomword.app.randomword;
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.Html;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.TextView;
import android.support.v7.widget.Toolbar;
import android.widget.Toast;
import com.randomword.app.randomword.NetorkConnection;
@SuppressLint("SetJavaScriptEnabled")
public class Beats extends AppCompatActivity {

private WebView webView;
NetorkConnection ntwrk_con = new NetorkConnection(this);
ProgressDialog dialog;


public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);



    TextView toolsresources5 = (TextView)findViewById(R.id.feedbacktextview);
    toolsresources5.setVisibility(View.INVISIBLE);





    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    webView = (WebView) findViewById(R.id.activity_main_webview);



    dialog = new ProgressDialog(Beats.this);


    if (ntwrk_con.isConnectingToInternet()) {

        webView();

    } else {
        dialog_box_for_internet();
    }

}

public void dialog_box_for_internet() {
    if (ntwrk_con.isConnectingToInternet()) {

        webView();

    } else {
        // dismis_dialog_box_for_internet = true;
        AlertDialog.Builder builder = new AlertDialog.Builder(
                Beats.this);
        LayoutInflater inflater = getLayoutInflater();
        View view = inflater.inflate(R.layout.dialog_custom_titile, null);
        TextView title = (TextView) view.findViewById(R.id.myTitle);
        title.setText("Unable To Connect");
        builder.setCustomTitle(view);
        builder.setMessage("No Internet Connection")
                .setCancelable(false)
                .setPositiveButton("Retry",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog,
                                                int id) {
                                if (ntwrk_con.isConnectingToInternet()) {

                                    webView();

                                } else {
                                    new Thread_for_internet().execute();
                                }
                                // dialog.cancel();
                            }
                        })
                .setNegativeButton("Okay",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog,
                                                int id) {
                                finish();

                                // Gridview.super.onBackPressed();
                            }
                        });

        AlertDialog alert = builder.create();
        alert.show();
    }
}

class Thread_for_internet extends AsyncTask<String, Void, Boolean> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        dialog.setMessage("Loading..Please wait.");
        dialog.setCanceledOnTouchOutside(false);
        dialog.show();

    }

    @Override
    protected Boolean doInBackground(String... args) {

        try {

            Thread.sleep(2000);
        } catch (Exception e) {
            e.printStackTrace();
        }

        return null;

    }

    protected void onPostExecute(Boolean result) {
        dialog.dismiss();
        dialog_box_for_internet();

    }

}

public void webView() {
    webView.setWebViewClient(new WebViewClient() {
        @Override
        public void onPageFinished(WebView view, String url) {
            if (dialog.isShowing()) {
                dialog.dismiss();
            }
        }
    });
    dialog.setMessage("Picking Yes Or No...\nOne Moment...");
    dialog.setCanceledOnTouchOutside(false);
    dialog.show();

    webView.getSettings().setJavaScriptEnabled(true);
    webView.getSettings().setDomStorageEnabled(true);
    webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
    webView.getSettings().setLoadsImagesAutomatically(true);
    webView.setWebChromeClient(new WebChromeClient());


    webView.loadUrl("http://s-ka-paidbeats.com/app_tree/randomword/5.php?nocache=1");

    WebSettings webSettings = webView.getSettings();
    webSettings.setJavaScriptEnabled(true);
    webSettings.setDomStorageEnabled(true);
    webSettings.setLoadsImagesAutomatically(true);


}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (event.getAction() == KeyEvent.ACTION_DOWN) {
        switch (keyCode) {
            case KeyEvent.KEYCODE_BACK:
                if (webView.canGoBack()) {
                    webView.goBack();
                } else {
                    finish();
                }
                return true;
        }

    }
    return super.onKeyDown(keyCode, event);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    boolean bRet=false;//set true is menu selection handled
    switch (item.getItemId()) {
        case R.id.action_settings_3:
            Toast.makeText(this, Html.fromHtml("<big><b>Develeped By S-Ka-Paid</b></big><br>© 2016 S-Ka-Paid"), Toast.LENGTH_LONG).show();
            bRet=true;
            break;
        case R.id.action_settings_4:
            Intent intent2 = new Intent(Intent.ACTION_VIEW);
            //Try Google play
            intent2.setData(Uri.parse("market://details?id=com.yesorno.app.yesorno"));
            startActivity(intent2);
            bRet=true;
            break;
        default:
            bRet=super.onOptionsItemSelected(item);
    }
    return bRet;
}
}

如果您在桌面上访问页面：http://s-ka-paidbeats.com/app_tree/randomword/5.php，有时它会工作，有时浏览器不会在第一个单词后更改随机单词.....我认为这与浏览器缓存或其他问题有关，但我不确定。
你的代码是什么样子的？ - Evan Carslake
抱歉我的问题直接了点...我已经编辑了问题并包含了更多的细节，链接现在也可以使用，你可以自己测试页面。 - skapaid
1个回答
1
我遇到了同样的问题，WebView忽略了location.reload()。 我的想法是从Android Activity调用webview.reload()，并使用@JavascriptInterface从Javascript触发此调用。这引起了其他问题，但我已经找到了一个解决方法，就像这里解释的那样：无法从Javascript重新加载Android WebView。
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